Effects of operating conditions on durability of polymer electrolyte membrane fuel cell Pt cathode catalyst layer

Ohyagi, Shinsuke; Matsuda, Toshihiko; Iseki, Yohei; Sasaki, Tatsuyoshi; Kaito, Chihiro

doi:10.1016/j.jpowsour.2010.12.068

Cited by 50 publications

(34 citation statements)

References 20 publications

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“…Besides, the electrocatalytic behavior of NS-MCs was significantly influenced by the annealing temperature due to N and S co-doping synergetic effect on the ORR. The key kinetic parameters including the electron transfer number (n) and kinetic current density (j k ) of the obtained NS-MC composites were analyzed on the basis of the Koutecky-Levich (K-L) equations (1)- (3). RRDE measurements also showed that the j L on the NS-MC1000 electrode improved with increasing the rotation rate (from 225 to 3600 rpm) (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…However, the current bottleneck of PEMFCs is based on the sluggish ORR kinetics on the cathode [1]. Although Ptbased electrocatalysts have been traditionally applied to catalyze the ORR with a high efficiency, they still suffer from several serious problems, including declining activity, poisoning effects, and crossovers [2,3]. In addition, the prohibitive cost of the platinum catalysts as well as its limited supply in nature, has hindered the large-scale commercialization of PEMFCs [4].…”

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Nitrogen and Sulfur Dual-doped Hierarchical Micro/mesoporous Carbon Foams as Efficient Metal-free Electrocatalysts for Oxygen Reduction Reaction

Jiang

Sun

Dai

et al. 2015

Electrochimica Acta

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Nitrogen and Sulfur Dual-doped Hierarchical Micro/mesoporous Carbon Foams as Efficient Metal-free Electrocatalysts for Oxygen Reduction Reaction

Jiang

Sun

Dai

et al. 2015

Electrochimica Acta

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“…The influence of environmental conditions such as temperature and humidity on the decline of ECA during potential cycle tests has been investigated. It is reported that the decrease in normalized ECA ratio increases when temperature and humidity are raised [1][2][3][4]. It is said that the increase in Pt particle size and the agglomeration are promoted by Ostwald ripening on carbon support and dissolution-re-precipitation through the ionomer phase.…”

Section: Introductionmentioning

confidence: 99%

Effects of Environmental Conditions on Cathode Degradation of Polymer Electrolyte Fuel Cell during Potential Cycle

Hashimasa

Daitoku

Numata

2019

WEVJ

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We investigated the effects of cell temperature and the humidity of gas supplied to the cell during the load cycle durability test protocol recommended by The Fuel Cell Commercialization Conference of Japan (FCCJ). Changes in the electrochemically active surface area (ECA) and in the amount of carbon support corrosion were examined by using the JARI standard single cell. The ECA declined more quickly when the gas humidity was raised, and the carbon corrosion was at the same level. These results suggest that the agglomeration of platinum was accelerated by the same agglomeration mechanism, i.e., by raising the humidity of the gas supplied to the cell.

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“…63,64 The fuel cell performances were evaluated after subjecting to triangular wave cycling (TWC) [58][59][60]63,64,66 or square wave cycling (SWC) 58 Based on the catalyst durability studies available in the literature, it is evident that Pt-based catalysts are not stable under PEMFC operating conditions and Pt degradation occurs through Pt dissolution/ re-deposition and Ostwald ripening mechanisms. Pt alloy catalysts appear to provide enhanced ORR activities even in the absence of alloying elements on the surface layer which are leached out when exposed to acids leaving Pt-rich surface for ORR.…”

mentioning

confidence: 99%

Development of Highly Active and Durable Hybrid Cathode Catalysts for Polymer Electrolyte Membrane Fuel Cells

Xie

Jung

Kim

et al. 2014

J. Electrochem. Soc.

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Carbon composite catalyst (CCC) and activated carbon composite catalyst (A-CCC), both containing active catalytic sites for oxygen reduction reaction (ORR), were synthesized and used as supports to develop hybrid cathode catalysts (HCCs). HCCs are a combination of CCC or A-CCC supports and Pt or Co-doped Pt catalysts. Uniform Pt deposition on these supports was accomplished through surface modification and modified polyol processes. The Co-doped Pt was synthesized at 800°C in the presence of polyaniline protective coating. The HCCs, namely Pt/A-CCC, Co-doped Pt/CCC, and L-Co-doped Pt/CCC catalysts showed peak power densities of 944, 857, and 1050 mW cm−2, respectively, which are much higher than the commercial Pt/C (746 mW cm−2). Furthermore, the Pt/C showed very high power density loss (63%) when compared to HCCs (16–26% loss) after 30,000 potential cycles (0.6–1.0 V). The Pt/A-CCC catalyst showed excellent support stability when subjected to potential holding at 1.2 V for 400 h (27 mV loss at 800 mA cm−2) and 5,000 potential cycles between 1.0 and 1.5 V (25 mV loss at 1500 mA cm−2) which are less than that of 2017 US DOE targets (≤30 mV loss). The durability studies indicated that the HCCs are promising cathode catalysts for transportation applications.

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Effects of operating conditions on durability of polymer electrolyte membrane fuel cell Pt cathode catalyst layer

Cited by 50 publications

References 20 publications

Facile Synthesis of Nitrogen and Sulfur Dual-doped Hierarchical Micro/mesoporous Carbon Foams as Efficient Metal-free Electrocatalysts for Oxygen Reduction Reaction

Facile Synthesis of Nitrogen and Sulfur Dual-doped Hierarchical Micro/mesoporous Carbon Foams as Efficient Metal-free Electrocatalysts for Oxygen Reduction Reaction

Effects of Environmental Conditions on Cathode Degradation of Polymer Electrolyte Fuel Cell during Potential Cycle

Development of Highly Active and Durable Hybrid Cathode Catalysts for Polymer Electrolyte Membrane Fuel Cells

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